CN223212703U

CN223212703U - Secondary folding device of folding machine

Info

Publication number: CN223212703U
Application number: CN202422446415.3U
Authority: CN
Inventors: 王根乐
Original assignee: Langfang Zhongfeng Machinery Technology Co ltd
Current assignee: Langfang Zhongfeng Machinery Technology Co ltd
Priority date: 2024-10-10
Filing date: 2024-10-10
Publication date: 2025-08-12
Anticipated expiration: 2034-10-10

Abstract

The present utility model belongs to the field of mechanical equipment, and specifically, is a secondary folding device for a folding machine. It comprises a frame that reciprocates along the material conveying direction of the folding machine, a placement plate fixed to the frame for placing materials, and a pressing plate for pressing the materials. The pressing plate is arranged above the placement plate and in the material feeding direction of the placement plate. An up-and-down stroke device and a forward-and-backward stroke device are arranged between the pressing plate and the frame, so that the pressing plate can reciprocate relative to the placement plate in both the height direction and the material conveying direction. The lower limit position of the pressing plate in the height direction abuts against the placement plate, and the limit position of the pressing plate in the feeding direction corresponds to the edge of the placement plate in the feeding direction. The present utility model not only has a better compression effect on plastic bags, but also can squeeze out the gas between bags. It is suitable for folding soft and sheet-like materials, and is particularly suitable for folding stacks of plastic bags.

Description

Secondary folding device of folding machine

Technical Field

The utility model belongs to the field of mechanical equipment, and relates to a folding machine for producing plastic bags, in particular to a secondary folding device of the folding machine.

Background

In the prior art, a film blowing machine processes materials for producing plastic bags into coiled plastic films, the coiled plastic films are cut and stacked into a whole product through a bag making machine, and the whole product is processed into bundles of folded plastic bags through a folding machine. Specifically, the coiled plastic films are cut and stacked by the bag making machine and then are folded by the folding device of the folding machine and conveyed to a preset working position, the existing folding device can be folded once, but in order to facilitate storage, transportation and sales, the piled plastic bags are manually folded for a plurality of times, and then are bundled and finally are packaged.

The folding device in the prior art usually grabs the edges of the piled plastic bags through the gripper mechanism, the gripper mechanism moves along the material transportation direction, the piled plastic bags are spread on the placing plate and then loose and reset, when the plastic bags are placed, one half of the plastic bags are spread on the placing plate, the other half of the plastic bags depend on the action of gravity to droop, at the moment, the gripper mechanism grabs the middle part of the piled plastic bags again, and moves along the material transportation direction after grabbing, so that the folding of the plastic bags is completed. If multiple folds are needed, multiple placing plates are needed to be arranged, and the actions are repeated. The above-mentioned folding method can fold the piled plastic bags, but because the piled plastic bags have heavy self weight and the plastic bags are easy to slide relatively, two problems are easy to occur when folding, firstly, the plastic bags are easy to slide off from the placing plate, so that the follow-up action cannot be performed, and secondly, when gas exists between each piled plastic bag and the plastic bag, the folded plastic bags are folded under the condition, a small amount of gas remains in the piled plastic bags after the folding is completed, and the order and the appearance of the final product are affected.

The patent of China patent publication No. CN214824746U discloses a folding device and a plastic bag folding device, wherein a second folding mechanism of the folding device comprises a placing main body and a fastening main body, the fastening main body can move in the vertical direction relative to a fixed support and is used for fixedly clamping a plastic bag to be folded on the placing main body, the problem that one half of the plastic bag is placed on the placing main body, and the other half of the plastic bag easily slides off the placing main body when depending on gravity to droop is solved, but the situation that gas exists between each stack of plastic bags is still existed.

Disclosure of utility model

In order to solve the defects in the prior art, the utility model aims to provide a secondary folding device of a folding machine, so as to achieve the purposes of avoiding falling of plastic bags in the folding process and exhausting gas between the plastic bags.

The secondary folding device of the folding machine comprises a frame body and a placing plate, wherein the frame body reciprocates along the material conveying direction of the folding machine, the placing plate is fixedly arranged on the frame body and used for placing materials, the pressing plate is used for pressing the materials and arranged above the placing plate and located in the feeding direction of the placing plate, an up-down stroke device and a front-back stroke device are arranged between the pressing plate and the frame body, the pressing plate reciprocates along the height direction and the material conveying direction, the lower limit position of the height direction of the pressing plate is propped against the placing plate, and the limit position of the feeding direction of the pressing plate corresponds to the edge of the feeding direction of the placing plate.

As the limitation of the utility model, a plurality of openings matched with the hand grip position of the folding machine are formed on the edge of the feeding direction of the compacting plate and the edge of the feeding direction of the placing plate.

The width of the compacting plates is matched with the width of the placing plates as a limitation of the utility model.

The utility model is limited in that the up-down stroke device comprises a first reciprocating motion part fixedly arranged on the frame body along the height direction, the free end of the first reciprocating motion part penetrates through the frame body, and the pressing plate is connected with the end part of the free end.

The vertical stroke device is limited by the utility model, and the vertical stroke device also comprises first guide devices which are symmetrically arranged at the two sides of the first reciprocating motion part and along the height direction, wherein the first guide devices comprise first guide parts and first sliding parts which slide relatively, the first guide parts are fixedly arranged on the frame body, and the first sliding parts are connected with the compacting plates.

The upper and lower stroke device also comprises a bearing plate, wherein the bearing plate is fixedly arranged at the free end of the first reciprocating motion part and fixedly connected with the first sliding part of the first guiding device, and the compressing plate and the front and rear stroke device are both arranged on the bearing plate.

The front-back stroke device comprises a second reciprocating motion part fixedly arranged on the bearing plate, and the pressing plate is fixedly connected with the free end of the second reciprocating motion part.

The utility model is limited in that the front and rear travel device further comprises a second guiding device along the material conveying direction, the second guiding device comprises a second guiding part and a second sliding part which slide relatively, the second guiding part is fixedly arranged on the bearing plate, and the second sliding part is fixedly connected with the compacting plate.

The second reciprocating part comprises a driving motor and a driven shaft rotatably arranged on the bearing plate, wherein an output shaft of the driving motor is connected with the driven shaft through a transmission belt, and a transmission block fixedly connected with the compression plate is fixedly arranged on the transmission belt.

The utility model is limited in that the second guide part comprises guide rails symmetrically fixed on two sides of the motor, and the second sliding part comprises sliding blocks respectively arranged on the two guide rails in a sliding way.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the compacting plates are arranged on the placing plates, the compaction of the existing rod structure is replaced by the compaction of the compacting plates, the contact area between the compacting plates and the placing plates is larger, the compaction effect is better, dropping of plastic bags in the folding process is further avoided, gas existing between the bags can be extruded and discharged, the final bundled plastic bag products are tidier and more attractive, compared with the compaction of the rod structure, the compacting plates can reciprocate on a folding machine along the material direction along with the placing plates, grippers are not needed to grasp, the plastic bags between the compacting plates and the placing plates are directly conveyed to the upper part of the subsequent plate structure in the discharging direction, the plastic bags which depend on the action of gravity can be folded to the lower part of the plastic bags between the compacting plates and the placing plates, and the folding of the plastic bags is completed, so that the structure is simpler and more optimal.

In conclusion, the utility model has better compacting effect on the plastic bags, can extrude and discharge the gas existing between the bags, ensures that the final bundled plastic bag products are more tidy and beautiful, has simpler and more optimized structure, is suitable for folding soft and flaky materials, and is particularly suitable for folding the piled plastic bags.

Drawings

The utility model will be described in more detail below with reference to the accompanying drawings and specific examples.

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an up-down stroke device according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a front-rear stroke device in an embodiment of the utility model.

In the figure, 1-frame body, 2-placing plate, 3-opening, 4-compacting plate,

5-Up-down stroke means, 51-first reciprocating member, 52-first guide portion, 53-first sliding portion, 54-carrier plate;

6-front and back stroke device, 61-driving motor, 62-driven shaft, 63-transmission block, 64-second guide part and 65-second sliding part.

Detailed Description

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the secondary folding apparatus of the folding machine described herein is a preferred embodiment and is provided only for illustrating and explaining the present utility model and is not to be construed as limiting the present utility model.

The terms or positional relationships of the "upper", "lower", "left", "right" and the like in the present utility model are based on the positional relationships of the drawings in the present specification, and are merely for convenience of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the protection of the present utility model.

Examples

This embodiment is shown in fig. 1-3, and is a folding machine secondary folding device, including carrying out reciprocating motion's support body 1 along folding machine material conveying direction, set firmly on support body 1 be used for placing the board 2 of placing of material, still including being used for pushing down the pressure strip 4 of material, be provided with stroke device 5 and back-and-forth device 6 about pressure strip 4 and the support body 1 between, make pressure strip 4 carry out reciprocating motion along direction of height and material conveying direction, realize centre gripping and the transport to the material.

Specifically, in this embodiment, the secondary folding device of the folding machine is directly or indirectly connected to the frame 1, where the frame 1 is provided with a travel device capable of performing reciprocating motion in the prior art, and the travel device is capable of being disposed on a frame (not shown in the figure) of the folding machine in a reciprocating manner, so that the frame 1 drives the whole secondary folding device to reciprocate along the material conveying direction, and any travel device performing reciprocating motion in the prior art may be adopted, for example, a combination of a cylinder and a guide rail slider, or a combination of a motor and a conveyor belt, etc., which is not limited in this embodiment.

In fig. 1, the left side is the feeding direction, that is, the material is conveyed from the left side to the secondary folding device, and the right side is the feeding direction, that is, the material on the secondary folding device is finally output to the right side in the figure. The material in this embodiment is a pile of plastic bags, but of course, this embodiment can also be applied to folding any other soft sheet material.

As shown in fig. 1, the frame 1 is disposed on a folder in a direction perpendicular to a material and reciprocates in a material conveying direction of the folder. The placing plate 2 for placing materials is fixedly arranged on the frame body 1, the width of the placing plate 2 is equal to or larger than that of the plastic bag, and the plastic bag is ensured to be stably placed on the material placing plate 2. Four notches 3 matched with the positions of the grippers of the folding machine are formed in the edges of the feeding direction of the material placing plate 2, and when the four grippers of the folding machine grasp plastic bags from the placing plate 2, the design of the notches 3 can prevent the grippers from grabbing the placing plate 2 together. The number, size and position of the notches 3 can be adjusted according to practical conditions.

The secondary folding device further comprises a compacting plate 4 for pressing the material. Specifically, the width of the compacting plate 4 is matched with the width of the placing plate 2, four openings 3 matched with the positions of the handles of the folding machine are also formed in the edge of the feeding direction of the compacting plate 4, the number, the size and the positions of the openings 3 can be adjusted according to actual conditions, and when the front and back stroke device can press the bag without running in place, the openings can be optionally not formed in the compacting plate. The compacting plate 4 is arranged above the placing plate 2 and positioned in the feeding direction of the placing plate 2 and is used for compacting and compacting the stacked plastic bags placed on the placing plate 2.

An up-down stroke device 5 and a front-back stroke device 6 are arranged between the compacting plate 4 and the frame body 1, so that the compacting plate 4 reciprocates along the height direction and the material conveying direction.

As shown in fig. 2, the up-and-down stroke device 5 includes a first reciprocating member 51 fixed to the frame body 1 in the height direction, the first reciprocating member 51 including a fixed end and a free end reciprocating with respect to the fixed end, the free end of the first reciprocating member 51 penetrating the frame body 1, and the pressing plate 4 being connected to an end of the free end. The first reciprocating member 51 in this embodiment is a cylinder, and a main body portion of the cylinder is fixedly disposed on the bottom surface of the frame 1, and a piston of the cylinder extends through the frame 1 and is connected to the pressing plate 4. Of course, the cylinder may be replaced with a stroke mechanism capable of reciprocating in the prior art such as an oil cylinder or an electric push rod, if necessary. In order to make the movement of the up-down stroke device 5 more stable, the up-down stroke device 5 further comprises first guide devices symmetrically arranged at two sides of the first reciprocating member 51 along the height direction, the first guide devices comprise first guide parts 52 and first sliding parts 53 which slide relatively, the first guide parts 52 are fixedly arranged on the frame body 1, and the first sliding parts 53 are connected with the compacting plates 4. The first guiding portion 52 in this embodiment includes four linear bearings fixed to the frame 1 in the height direction, and the first sliding portion 53 is four cylindrical shafts sleeved in the linear bearings. When the cylinder piston reciprocates up and down, the compacting plate 4 also reciprocates up and down under the action of the cylinder for compacting and releasing the plastic bag, during which the linear bearing and the cylindrical shaft play a guiding role.

Further, the up-down stroke device 5 further includes a bearing plate 54, the bearing plate 54 is fixedly arranged at the top end of the cylinder piston and fixedly connected with the top end of the linear bearing, and the compressing plate 4 and the front-back stroke device 6 are both arranged on the bearing plate 54, so that the compressing plate 4 realizes up-down reciprocating motion in the height direction through the motion of the bearing plate 54.

As shown in fig. 3, the forward and backward stroke device 6 includes a second reciprocating member fixed to the carrier plate 54, and the pressing plate 4 is fixedly connected to a free end of the second reciprocating member. The second reciprocating member in this embodiment includes a driving motor 61 fixedly disposed on a lower end surface of a feeding direction side of the carrier plate 54, an output shaft of the driving motor 61 penetrates through the carrier plate 54 along a height direction, the second reciprocating member further includes a driven shaft 62 rotatably disposed on a feeding direction side of the carrier plate 54, the output shaft of the driving motor 61 is connected with the driven shaft 62 through a driving belt (not shown in the figure), a driving block 63 fixedly connected with the compacting plate 4 is fixedly disposed on the driving belt, and when the motor rotates, the driving belt moves along with the driving belt to drive the driving block 63 to move, so that the compacting plate 4 fixedly connected to the driving block 63 moves, and the reciprocating movement of the compacting plate 4 is controlled by the forward and backward rotation of the motor. Of course, the second reciprocating member may be replaced with a stroke mechanism capable of reciprocating in the prior art such as a cylinder or an electric putter, if necessary.

In order to make the action of the front and rear stroke device 6 more stable, the front and rear stroke device 6 further comprises a second guiding device along the material conveying direction, the second guiding device comprises a second guiding part 64 and a second sliding part 65 which slide relatively, the second guiding part 64 is fixedly arranged on the bearing plate 54, and the second sliding part 65 is fixedly connected with the compacting plate 4. In this embodiment, the second guiding portion 64 includes a pair of guide rails symmetrically fixed on two sides of the motor on the carrier plate 54, the second sliding portion 65 includes two sliding blocks respectively slidably disposed on the two guide rails, and the pressing plate 4 is fixed above the sliding blocks.

The movements of the motor and the cylinder are controlled by a control system of the folding machine, and the control system is in the prior art and is not described herein. The compacting plate 4 is positioned above the placing plate 2 and is propped against the placing plate 2, in a non-working state, the compacting plate 4 is close to one side of the feeding direction relative to the placing plate 2, after working, the gripper pulls the piled plastic bags after being folded once to the upper part of the placing plate 2 along the material conveying direction and is positioned outside the compacting plate 4, the central line of the piled plastic bags after being folded once along the material conveying direction coincides with the edge of the feeding direction of the placing plate 2, the fastening device which is positioned in the feeding direction of the secondary folding device and is arranged on the frame of the folding machine and reciprocates along the height direction descends, the end part of the piled plastic bags after being folded once is pressed, the cylinder piston moves to drive the bearing plate 54 to move upwards, the bearing plate 4 is separated from the upper surface of the placing plate 2, the motor rotates to enable the compacting plate 4 to move towards the feeding direction to a limit position, the limit position needs to ensure that the compacting plate 4 can cover the stacked plastic bags after being folded once on the placing plate 2, the coverage degree can be adjusted according to the requirement, at most, the limit position of the feeding direction of the compacting plate 4 coincides with the edge of the feeding direction of the placing plate 2, the piston of the air cylinder moves to enable the bearing plate 54 to drive the compacting plate 4 to move downwards to the lower limit position of the height direction of the compacting plate 4, namely, the compacting plate 4 props against the placing plate 2, the compacting plate 4 and the placing plate 2 clamp the stacked plastic bags after being folded once, the fastening device ascends to enable the stacked plastic bags after being folded once to be located at half of the feeding direction, the travel device on the folding machine drives the secondary folding device to move integrally in the feeding direction under the action of gravity, and when the secondary folding device moves to a platform of the subsequent procedure, the folding device is completed by one fourth of the gravity.

The operation of the present embodiment is described by taking the secondary folding of the stacked plastic bags that require multiple folds as an example, but the present invention is not limited thereto, and any one folding of the soft sheet material can be performed by using the structure of the present embodiment.

Claims

1. The utility model provides a folding machine secondary folding device, includes along folding machine material direction of delivery carries out reciprocating motion's support body, sets firmly the board of placing that is used for placing the material on the support body, its characterized in that: still including being used for pushing down the pressure strip of material, the pressure strip sets up in the top of placing the board and is located the incoming material direction of placing the board, is provided with stroke unit and back-and-forth movement device between pressure strip and the support body, makes the pressure strip follow direction of height and material direction of delivery homoenergetic and places the board relatively and carry out reciprocating motion, and the lower extreme position of the direction of height of pressure strip offsets with placing the board, and the extreme position of pressure strip direction of delivery is corresponding with the edge of placing board direction of delivery.

2. The secondary folding device of the folding machine according to claim 1, wherein a plurality of openings matched with the positions of the handles of the folding machine are formed on the edge of the feeding direction of the pressing plate and the edge of the feeding direction of the placing plate.

3. The secondary folding device of a folding machine according to claim 2, wherein the width of the pressing plate is adapted to the width of the placing plate.

4. The secondary folding device of the folding machine according to any one of claims 1 to 3, wherein the up-down stroke device comprises a first reciprocating part fixedly arranged on the frame body along the height direction, the free end of the first reciprocating part penetrates through the frame body, and the pressing plate is connected to the end part of the free end.

5. The secondary folding apparatus of claim 4, wherein the up-down stroke device further comprises first guide devices symmetrically arranged on both sides of the first reciprocating motion part and along the height direction, the first guide devices comprise first guide parts and first sliding parts which slide relatively, the first guide parts are fixedly arranged on the frame body, and the first sliding parts are connected with the compacting plates.

6. The secondary folding apparatus of claim 5, wherein the up-down stroke apparatus further comprises a carrier plate fixedly disposed at a free end of the first reciprocating member and fixedly connected to the first sliding portion of the first guiding device, and the pressing plate and the front-back stroke apparatus are disposed on the carrier plate.

7. The secondary folding device of the folding machine according to claim 6, wherein the front-back stroke device comprises a second reciprocating motion part fixedly arranged on the bearing plate, and the pressing plate is fixedly connected with the free end of the second reciprocating motion part.

8. The secondary folding device of the folding machine according to claim 7, wherein the front-back stroke device further comprises a second guiding device along the material conveying direction, the second guiding device comprises a second guiding part and a second sliding part which slide relatively, the second guiding part is fixedly arranged on the bearing plate, and the second sliding part is fixedly connected with the compacting plate.

9. The secondary folding device of the folding machine according to claim 8, wherein the second reciprocating part comprises a driving motor and a driven shaft rotatably arranged on the bearing plate, an output shaft of the driving motor is connected with the driven shaft through a transmission belt, and a transmission block fixedly connected with the pressing plate is fixedly arranged on the transmission belt.

10. The secondary folding device of claim 9, wherein the second guiding part comprises guide rails symmetrically fixed on two sides of the motor, and the second sliding part comprises sliding blocks respectively arranged on the two guide rails in a sliding manner.